CA2366971A1 - Capteur de vibration a fibre optique base sur la modulation de frequence d'oscillateurs excites par la lumiere - Google Patents

Capteur de vibration a fibre optique base sur la modulation de frequence d'oscillateurs excites par la lumiere Download PDF

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Publication number
CA2366971A1
CA2366971A1 CA002366971A CA2366971A CA2366971A1 CA 2366971 A1 CA2366971 A1 CA 2366971A1 CA 002366971 A CA002366971 A CA 002366971A CA 2366971 A CA2366971 A CA 2366971A CA 2366971 A1 CA2366971 A1 CA 2366971A1
Authority
CA
Canada
Prior art keywords
frequency modulated
oscillator
light
frequency
vibration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA002366971A
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English (en)
Inventor
J. David Zook
William R. Herb
David W. Burns
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honeywell Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2366971A1 publication Critical patent/CA2366971A1/fr
Abandoned legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/097—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by vibratory elements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P2015/0805—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration
    • G01P2015/0822—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration for defining out-of-plane movement of the mass
    • G01P2015/0825—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration for defining out-of-plane movement of the mass for one single degree of freedom of movement of the mass
    • G01P2015/0828—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration for defining out-of-plane movement of the mass for one single degree of freedom of movement of the mass the mass being of the paddle type being suspended at one of its longitudinal ends

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

L'invention concerne un capteur destiné à détecter les vibrations. Ce capteur comprend une source lumineuse servant à émettre une lumière laser, une première fibre optique connectée à la source pour émettre la lumière laser, un oscillateur capable de recevoir la lumière laser émise et de réfléchir la lumière comme une lumière à fréquence modulée; une seconde fibre optique placée de manière à capter la lumière à fréquence modulée afin d'émettre ladite lumière; et un détecteur de fréquence modulée destiné à recevoir la lumière à fréquence modulée depuis la seconde fibre optique et à émettre un signal en réponse à la vibration de l'oscillateur. Dans un meilleur mode de réalisation, le détecteur de fréquence modulée comprend aussi un fréquencemètre servant à déterminer la moyenne de cycles par unité de temps afin d'émettre un second signal en réponse à la température de l'oscillateur. Les fibres optiques peuvent former un ensemble de différentes fibres disposées de manière à émettre la lumière laser et la lumière à fréquence modulée. Elles peuvent aussi être constituées d'une même fibre capable d'émettre à la fois la lumière laser et la lumière à fréquence modulée. Le meilleur oscillateur comprend une puce munie d'un microfaisceau montée sur un fin porte-à-faux en silicium de manière à ce que la déviation du faisceau perpendiculairement à la surface de la puce modifie la tension dans le microfaisceau et change sa fréquence de résonnance. Dans un autre mode de réalisation, le microfaisceau comprend une fine couche métallique afin de créer une structure dimorphe.
CA002366971A 1999-03-30 2000-02-22 Capteur de vibration a fibre optique base sur la modulation de frequence d'oscillateurs excites par la lumiere Abandoned CA2366971A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/281,388 US6246638B1 (en) 1999-03-30 1999-03-30 Fiber-optic vibration sensor based on frequency modulation of light-excited oscillators
US09/281,388 1999-03-30
PCT/US2000/004495 WO2000058737A1 (fr) 1999-03-30 2000-02-22 Capteur de vibration a fibre optique base sur la modulation de frequence d'oscillateurs excites par la lumiere

Publications (1)

Publication Number Publication Date
CA2366971A1 true CA2366971A1 (fr) 2000-10-05

Family

ID=23077089

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002366971A Abandoned CA2366971A1 (fr) 1999-03-30 2000-02-22 Capteur de vibration a fibre optique base sur la modulation de frequence d'oscillateurs excites par la lumiere

Country Status (5)

Country Link
US (2) US6246638B1 (fr)
EP (1) EP1166128A1 (fr)
JP (1) JP2002540430A (fr)
CA (1) CA2366971A1 (fr)
WO (1) WO2000058737A1 (fr)

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US7443509B1 (en) 2004-12-12 2008-10-28 Burns David W Optical and electronic interface for optically coupled resonators
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US7379629B1 (en) 2004-12-12 2008-05-27 Burns David W Optically coupled resonant pressure sensor
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US8094841B2 (en) * 2007-01-17 2012-01-10 The Regents Of The University Of California Apparatus and method using capacitive detection with inherent self-calibration
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US9844408B2 (en) 2012-11-30 2017-12-19 Gyrus Acmi, Inc. Replacable debrider blade module with latching mechanism
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AU2016219980B2 (en) 2015-02-18 2020-09-03 Medtronic Xomed, Inc. RF energy enabled tissue debridement device
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Also Published As

Publication number Publication date
JP2002540430A (ja) 2002-11-26
WO2000058737A1 (fr) 2000-10-05
US6246638B1 (en) 2001-06-12
US6763723B1 (en) 2004-07-20
EP1166128A1 (fr) 2002-01-02

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Legal Events

Date Code Title Description
FZDE Discontinued